Scania BMU DTC 1377 Contactor unit for direct current charging with charging cable, negative contactor fixed in closed position

BMU Battery Management Unit · Scania

Code 1377 (decimal). Some diagnostic tools show it in hexadecimal as 0561.

In short

BMU has received a message from BMU B, E172 stating that the negative contactor for direct current charging is stuck in the closed position when it should be open.

Applies to: BMU6 (RES)BMU6 (RESXA)BMU6 (RESXB)BMU6 (RESXC)BMU6 (RESXD)BMU6 (RESXE)BMU6 (RESXF)BMU6 (RESXG)BMU6 (RESXH)BMU6 (RESXI)BMU6 (RESXJ)BMU6 (RESXK)

What does Scania BMU fault code 1377 mean?

What causes Scania DTC 1377?

How does the system react?

What are the symptoms?

How to fix Scania BMU fault code 1377?

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This information is for guidance only. Always follow the manufacturer workshop manual and safety procedures; if in doubt, contact an authorised workshop.

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